Automatic feeder for presses



- P. W. BARKtH.

- AUTOMATIC FEEDER FOR PBEssEs.

APPLldATION FILED SEPT, 22, I921- Patented July 18, 1922 v 4 SHEETSSHEET I.

' P. w BARKER. AUTOMATIC FEEDER FOR PRESSES.

APPLICATION EILED SEPT. 22, I921.

Patented July 18, 1922 4 SHEETS-SHEET 2.

P. W. BARKER. AUTOMATIC FEEDER FOR PRESSES. APPI .ICAT|0N FILED SEPT. 22, [9 21.

- 4 SHEETS-SHEET 3.

Patented July 18, 1922.

P. W. BARKER.

AUTOMATIC FEEDER FOR PRESSES. APPHCAT'ON man sE PT;22.1921.

1,42%,91. I I Patented Jlily 18, 1922.

'4 SHEETS SHEET 4.

up suction head for the slip sheets entree srarss PERRY W. BARKER, 0F YOUNGSTOWN, OHIO.

AUTOMATIC FEEDER FOR PBESSEE.

Specification of Letters Patent.

Patented July 18., 1922.

Application filed September 22, 1921. Serial No. 502,415.

To all whom it may concern:

' lle it known that I, PERRY W. BARKER, a, citizen of the United States, residing at "1' oungstown, in the (minty of Mahoning and State of Ohio. have invented certain new and useful Improvements in Automatic Feeders for Premes, of which the following is a specification.

It is usual in job printing work to place a slip sheet of blank paper between successive printed sheets as they are taken from the press and laid one upon the other, in order that the printed sheets may not he soiled by the fresh ink on adjacent sheets.

The purpose of my invention is to provide simple and efficient means for performing this operation automatically. i

For the purposes of illustration, I have shown my device attached to a Miller automatic feeder and in connection with a- Chandler & Price press, although it is not limited to such use. 7

I provide a support for the slip sheets attached to the elevator of the automatic feeder, and a pneumatic transfer mechanism which takes a. slip sheet from the top of the stack and places it upon the top of the last printed sheet that has been removed from the press by the automatii feeder.

The pneumatic mechanism is so arranged that suction is applied alternately to the slip sheets and the sheets fed from the supply of the automatic feeder.

in the accompanying drawings, which illustrate the preferred form of my device, Figure 1 is a side elevation showing the device attached to the automatic feeder;

Figure 2 is a front view of-the same parts; Figure 3 is a top plan view of the slip sheet table and feeding device;

Figure is a perspective view of the pick and supporting means therefor;

Figure 5 is a section at the snction head' shown in Figure Figure 6 is an enlarged detail View, partiy in section, of parts of the pneumatic connections and valves; and 1 Figure 7 is a side elevation of the slip sheet table and its support. As my invention relates to an attachment, it has not been considered necessary to illustrate the press and automatic feeder in detail.

Thcreis shown a part of the power wheel 1 and the platen 2 of the press. The automat1c feeder comprises broadly an elevator 3. a. table 4 upon which the printed sheets are depositedhy pick up fingers 5 carried by a rod 6 extending laterally from an arm it" carried by an oscillating shaft 8 which is operated in the usual manner. and certain pneumatic connections hereinafter referred to. These parts are all old.

Attached to the elevator 3 by set screws 10 are clamps 9 from which rise standards 11 that support at their upper ends a. table 12.v

' As further means of support for this table hooks 17 are provided which hook over the upper edge of the elevator and are connected by sprlngs 18 to eyes 19 in the clamps 9.

Carried by the rod 6 is asplit clamp 20 held in adjusted position by a. set screw 21. An arm 22 is provided with a. slot through which passes aset screw 23 threaded into the clamp 20. This arm 22 carries the suction head 2+ which picks up the slip sheets 25. To the suction head is connected a. pneumatic These adjustments permit the suction head to be placed in proper relation to the slip sheets. Furthermore the front edge of the pile of slip sheets may be adjusted vertically by means of a. thumb screw 27.

Pipe :28 leads from the main air system beneath the elevator. and is connected with the automatic feeder through a pipe 29 controlled through a. valve 30. Connected to pipe .28 is a pneumatic connection 3L which leads to a fit-ting 33 supported from the feeding device and which contains valves 3:. and 3;. o this fit-ting is connected the pneumatic .26 above described that is held to the rod (5 by clips 35.

Also supported by said fitting and leading to the main pump located beneath the printing press and not shown. is a. biowcr pipe 36 that is carried to :1V point adjacent the front edge of the pile of sheets near their center.

Connected to the ro -k arm 7 is a strap or other member thiat is connected by a.

in; ma

chain 38 and adjusting device 319 to a member -10 attached to operate valve 34. This member 40 carries a weight ii.

The operation of the device is t'ollows: ssuming that the press and the automatic feeder have been properly set for the work to be performed, the pile of slip sheets is ad justed by means of thumb screw 2? until the top of the pile is in proper relation to the suction head 24. Preferably there should be a space of about one-eighth of aninch therebetween. At this time valves 30 and 32 should be closed.

Valve 30 is then opened, permitting the automatic feeder to operate. When the first printed sheet is being delivered to the table i by the pick up fingers 5. valve 32 is opened.

his permits the suction head 24; to pick up the top slip sheet. As the pick up fingers a move down to grasp the next printed sheet, the suction head 24. will carry the slip sheet over the printed sheet that has been deposited on the table l. At the limit of this movement. the arm 7 through connecting members 37, 38 and 40 has closed the valve 34 thereby permitting the sheet to drop upon the printed sheet, and also permitting the suction in the pneumatic system to be employed in operating the auto-f matic feeder.

its the rocker arm and pick up fingers move up, the weight M operates to open the valve 34 and cause the suction head 2i to pick up the next slip sheet.

This operation continues until either the slip sheets or the sheets in the elevator of the automatic feeder have been cxluiustcd. The exhaustion of either pile of sheets causes both mechanisms to stop.

The upper end of the blower 36 is placed adjacent the edge of the sheets so as to cause them to vibrate slowly and thus render it easier for the top sheet to be picked up by the suction head 24. The slant oi the table 12 also assists this action.

It it is desired to operate the press and automatic feeder Without the slip sheet teedmg device. it is only necessary to close the valve 32. It is obvious that the whole attachment can be quickly and read moved from the machine.

This device may also be used for assembling duplicate sheets with previously printed sheets, by placing" the original sheets on table 12 as it they were slip sheets.

Although I have illustrated the device 'l'or convenience sake in connection with aparticular 'form of printing press and automatic feeder, it is obvious that my invention is-not limited thereto. and that it can be applied to other machines without departing from the spirit of the invention or the scope of the appended claims.

I claim as myinvention:

1. In a slip sheet feeding device for prin ily rei115 presses, the combination oi an oscillat ing member. pick up devices carried by said member for transferring the printed sheets to a table. a pick up device for the slip sheets mounted For rota r and longitudinal adjustment on said member for transferring the slip sheets to said table. and means for autmnatically rendering the two pick up devices alternately operative.

In a slip shcct feeding device tor printing presses, the combination of an oscillatin member. pick up no *iccs carried by said mei'nber tor transierrir the printed sheets to a table, a pick up suction head also can ried by said member for transferring the slip sheets to said table. and means tor autm'natically rendering the two pick up de vices alternately operative.

3. in a. slip sheet Feeding device for print ing presses, the con'ibiziatimi of an oscillating member. pick up devices carried by said member for transferring the printed sheets to a table. a pick up suction head also carried 'hy' said member for tr; nsterring the slip shects to said table, pneumatic connections to said suction head. a valve therein. and means for automatically closing and opening said valve during 1 the oscilnition of said member. whereby the two pick up devices are (merated in alternation.

". in a slip sheet feeding device For priutin; presses. the combination oi an oscillatiu member. nick up devices carried by said member for transferring the printed sheets to a table. a pick up suction head also car ried by said member for transferring the slip' sheets to said table. pneumatic connections to said suction head. a valve therein. means for closing said valve during the movement of said oscillating member in one direction and separate means for opening said valve during the movement of said os cillating member in the other direction. whereby the two pick up devices are operated in alternation.

In a slip shcct feeding device for printing presses, the combination of an oscillating member, a clamp mo'untcd on said member for rotary and longitudinal adjustment thereon, an arm adjustahly mounted on the clamp. a pick up suction head for slip shccts carried by said arm, and means for rendering the suction head operative during move ment of the oscillating member in one direction and inoperative during movement in the other direction.

(3. in a slip sheet feeding device for ing presses. the combi ingmember. a pick up device for the slip sheets mounted for rotary and loup'itmdinal adjustment on said member. and automatic means for rendering the pick updcviccs op crativc to transfer a slip sheet to a table during movement or" the member in one direction." I

print natlon of an oscillat 7. In a slip sheet feeding device for printduring the oscillating movement of the ing presses, the combination of an oseillatmember in one direction, and separate means ing member, a pick no suction head carried for opening said valve during movement of 10 by said member foritransferring the slip the member in the other direction.

5 sheets to a table. pneumatic connections to In testimony whereof, I have hereunto said suction head, a vzilve therein, means opsubscribed my name. erated by said member for closing said valve -RY W. BARKER. 

